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Message-ID: <ezudlfnvquoxnb7jsd6u4vkyu6hd4waofum6u5s3fhm2cihjqx@5lfgbk7pmm75> Date: Tue, 2 Jan 2024 11:00:12 +0100 From: Stefano Garzarella <sgarzare@...hat.com> To: Mina Almasry <almasrymina@...gle.com> Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, kvm@...r.kernel.org, virtualization@...ts.linux.dev, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Stefan Hajnoczi <stefanha@...hat.com>, David Howells <dhowells@...hat.com>, Jason Gunthorpe <jgg@...dia.com>, Christian König <christian.koenig@....com>, Shakeel Butt <shakeelb@...gle.com>, Yunsheng Lin <linyunsheng@...wei.com>, Willem de Bruijn <willemdebruijn.kernel@...il.com> Subject: Re: [PATCH net-next v3 1/3] vsock/virtio: use skb_frag_*() helpers On Wed, Dec 20, 2023 at 01:45:00PM -0800, Mina Almasry wrote: >Minor fix for virtio: code wanting to access the fields inside an skb >frag should use the skb_frag_*() helpers, instead of accessing the >fields directly. This allows for extensions where the underlying >memory is not a page. > >Signed-off-by: Mina Almasry <almasrymina@...gle.com> > >--- > >v2: > >- Also fix skb_frag_off() + skb_frag_size() (David) >- Did not apply the reviewed-by from Stefano since the patch changed >relatively much. Sorry for the delay, I was off. LGTM! Acked-by: Stefano Garzarella <sgarzare@...hat.com> Possibly we can also send this patch alone if the series is still under discussion because it's definitely an improvement to the current code. Thanks, Stefano > >--- > net/vmw_vsock/virtio_transport.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > >diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c >index f495b9e5186b..1748268e0694 100644 >--- a/net/vmw_vsock/virtio_transport.c >+++ b/net/vmw_vsock/virtio_transport.c >@@ -153,10 +153,10 @@ virtio_transport_send_pkt_work(struct work_struct *work) > * 'virt_to_phys()' later to fill the buffer descriptor. > * We don't touch memory at "virtual" address of this page. > */ >- va = page_to_virt(skb_frag->bv_page); >+ va = page_to_virt(skb_frag_page(skb_frag)); > sg_init_one(sgs[out_sg], >- va + skb_frag->bv_offset, >- skb_frag->bv_len); >+ va + skb_frag_off(skb_frag), >+ skb_frag_size(skb_frag)); > out_sg++; > } > } >-- >2.43.0.472.g3155946c3a-goog >
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